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https://issues.apache.org/jira/browse/HDFS-994?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12839098#action_12839098
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Tsz Wo (Nicholas), SZE commented on HDFS-994:
---------------------------------------------
+1 patch looks good. Minor suggestions:
- The InputStream in (or dis) in getDTfromRemote(..) is not closed.
- You may use java.lang.Void instead of Object in the generic type of
PrivilegedExceptionAction
{code}
+ ugi.doAs(new PrivilegedExceptionAction<Object>() {
{code}
- ugiFinal can be eliminated by
{code}
+ final UserGroupInformation ugi;
+ try {
+ ugi = getUGI(req);
+ } catch(IOException ioe) {
{code}
> Provide methods for obtaining delegation token from Namenode for hftp and
> other uses
> ------------------------------------------------------------------------------------
>
> Key: HDFS-994
> URL: https://issues.apache.org/jira/browse/HDFS-994
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Jakob Homan
> Assignee: Jakob Homan
> Attachments: HDFS-994-2.patch, HDFS-994-3.patch, HDFS-994.patch
>
>
> In hftp, destination clusters will require an RPC-version-agnostic means of
> obtaining delegation tokens from the source cluster. The easiest method is
> provide a webservice to retrieve a token over http. This can be encrypted
> via SSL (backed by Kerberos, done in another JIRA), providing security for
> cross-cluster hftp operations.
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